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AFS20 Vent-Free Firestones Sets on Black Chassis - BL/LG/WH

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Brand: ALTERNA Contemporary Gas Fires
$920.00 - $1,798.00
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Rasmussen Vent-Free FireStones Set AFS20-BX

  • Multiple different shapes & sizes of stones made from the same high-heat refractory concrete as our gas logs
  • 20" Set Size
  • Includes an assortment of Black, Light Gray, & White Colored Stones
  • Uses either Natural Gas or Propane
  • 3 Lighting Control Choices


All ALTERNA vent free sets are certified to two standards: ANSI Z21.11.2 (Unvented Room Heaters) and ANSI Z21.60 (Vented Decorative Appliance). For use in wood-burning fireplaces or approved vent-free firebox enclosures. They may be used with the damper open, closed or anyplace in between. Vent-Free sets are supplemental zone heaters, they are not intended for continuous use or whole house heating. Has 30,000 BTU/hr maximum inputs.

ME Manual Control uses a standing pilot, but can only be turned on and off from a valve attached to the set. RE Remote Control uses a standing pilot and a variable flame height remote control. EI Remote Control does not use a standing pilot, but instead only has a pilot briefly with the push of a button for ignition, and also comes with a variable flame height remote control. For more information about Lighting Control Options please click on the link.


Minimum Fireplace Dimensions 

20" Set AFS20 Burner
Front Width 26"
Rear Width 20"
Depth 11"



Free Shipping. Ships from southern California via UPS. FireStones sets are made to order, so please allow at least 7 days before it ships. Feel free to contact us after this lead time for a status update on your FireStones set if it has not been marked as shipped yet.


FireStones sets cannot be returned to us once they have been burned. If the set has not been used, it can be returned to us within 30 days. See Return Policy Details